I'm surprised that the article doesn't mention anycast, which is more or less the "correct" way of using a CDN on an apex domain, since for the user's purposes

I'm surprised that the article doesn't mention anycast, which is more or less the "correct" way of using a CDN on an apex domain, since for the user's purposes it's just a static IP address. I find anycast to be convenient even for subdomains, since it isn't affected by things like DNS caching, (although things like edns-client-subnet apparently help with that). I'm actually currently looking for a CDN for my website. I don't like www (just personal preference) so anycast is pretty important to me, but there don't seem to be a lot of providers offering anycast for decent price. The closest I've seen is Google's Cloud CDN, which out of all the CDN's I've tried (a lot), is one of the best, but for a small site like mine I tend to get more cache misses than hits (simply due to eviction). Maybe I'll write up a blog post about this issue :)